Stefanie Zabel contributed to IsyFact’s isyfact-standards and isy-datetime repositories, focusing on process optimization and code maintainability. She improved the release workflow by adjusting Dependabot’s update frequency from daily to weekly on the release/4.x branch, reducing disruptions and aligning dependency management with release planning using YAML configuration and CI/CD practices. In isy-datetime, Stefanie enhanced test clarity by correcting translation and grammar issues in the Zeitraum class tests, supporting better onboarding and long-term maintainability. Her work demonstrated attention to both automation reliability and code quality, leveraging Java and configuration management to address targeted project needs within a short timeframe.